Seeking to solve the murder of a colleague, G-man John Ripley (Broderick Crawford) doggedly tears into the dead agent’s last three cases, hoping to discover the killer. He uncovers a trifecta of female trouble (Ruth Roman, Martha Hyer and Marisa Pavan), all entangled in extortion and murder. Based on true FBI cases, the film benefits from fantastic Los Angeles location work, including one of the earliest (and best) uses of the famed Hollywood Sign.